Final answer:
The point of view that allows insight into all characters' thoughts is third-person omniscient narration, where an all-knowing narrator observes from outside the story.
Step-by-step explanation:
The term for the point of view that gives the reader insight into the thoughts of all the characters in a story is third-person omniscient narration. This type of narration is performed by a narrator who is outside the story and observes and narrates from an all-knowing perspective, which means they have access to internal monologues—motives, thoughts, feelings—of all characters. Unlike third-person limited narration, which aligns with one or several characters and knows only what they know, an omniscient narrator has a full overview of the story's events and all characters' perspectives.